Mg(OH)2对榆树强化焙烧的研究

IF 9 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy Pub Date : 2025-06-17 DOI:10.1016/j.renene.2025.123800

Jiapeng Gong , Yanyang Mei , Baojun Wang , Shan Zhang , Yuanhao Hou , Jingfan Hou , Guiying Lin , Shusheng Pang

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引用次数: 0

摘要

焙烧是一种很有前途的生物质预处理方法。但在较低的温度下，脱氧效果不明显，而较高的温度焙烧需要更大的能量消耗。此外，在焙烧过程中释放的30%的碳以二氧化碳的形式排放。为了提高低温焙烧的脱氧效果，减少焙烧过程中的CO2排放，分别在垂直炉和热重质谱（TG-MS）上进行了以Mg(OH)2为添加剂的强化焙烧实验（温度分别为220、250和280℃）。结果表明，Mg(OH)2有效地增强了脱氧效果。与T220相比，T2220、T1220和T0.5220的O/C比值分别降低了17.31%、21.16%和19.23%，在250℃和280℃时也显著降低。Mg(OH)2的质量比对脱氧效果影响不大。此外，Mg(OH)2可以有效地吸收CO2，从而减少CO2的排放。其中，T2220在焙烧过程中的CO2排放量仅为T220的1/2左右。该研究可能为优化能源效率和减少碳化过程中的二氧化碳排放提供见解。

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Study on enhanced torrefaction of elm with Mg(OH)2

Torrefaction is a promising method for biomass pretreatment. However, there is an inconspicuous deoxygenation effect at lower temperature, while higher temperature torrefaction entails greater energy consumption. Additionally, 30 % of the carbon released during torrefaction is emitted as CO₂. In order to enhance the deoxygenation effect of low-temperature torrefaction and reduce CO₂ emissions during torrefaction, enhanced torrefaction experiments (220, 250 and 280 °C) with Mg(OH)₂ as additive were carried out on a vertical furnace and a thermogravimetric mass spectrometry (TG-MS), respectively. The results both showed that Mg(OH)₂ effectively enhanced the deoxygenation effect. Compared with T220, the O/C ratio of T₂220, T₁220 and T_0.5220 decreased by 17.31 %, 21.16 % and 19.23 %, respectively, which also decreased significantly at 250 °C and 280 °C. The mass ratio of Mg(OH)₂ had little effect on the deoxygenation effect. Furthermore, Mg(OH)₂ could effectively absorb CO₂, thus reducing CO₂ emissions. Among them, the CO₂ emissions of T₂220 was only about 1/2 of that of T220 during torrefaction. This study might offer insights into optimizing energy efficiency and lessening CO₂ emission during torrefaction.

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来源期刊

Renewable Energy 工程技术-能源与燃料

CiteScore

18.40

自引率

9.20%

发文量

1955

审稿时长

6.6 months

期刊介绍： Renewable Energy journal is dedicated to advancing knowledge and disseminating insights on various topics and technologies within renewable energy systems and components. Our mission is to support researchers, engineers, economists, manufacturers, NGOs, associations, and societies in staying updated on new developments in their respective fields and applying alternative energy solutions to current practices. As an international, multidisciplinary journal in renewable energy engineering and research, we strive to be a premier peer-reviewed platform and a trusted source of original research and reviews in the field of renewable energy. Join us in our endeavor to drive innovation and progress in sustainable energy solutions.